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Screw Cap and Insert Dropper for DIN18 Thread
DIN18 closures with dropper plug for precise dosing.
Available with or without security seal. Versions for aqueous liquids and oils.
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DIN18 screw closure systems with dropper inserts are designed to provide controlled and secure dosing in glass containers with a standard 18 mm thread. Their configuration allows for precise drop-by-drop administration, suitable for applications in the cosmetic, pharmaceutical, and laboratory sectors.
Manufactured from polyethylene (PE) or polypropylene (PP), these closures offer high chemical resistance and proper compatibility with liquid formulations. The integrated dropper insert acts as a dosing element, regulating the flow and preventing accidental spills or leaks.
They come in multiple variants, including versions with or without a tamper-evident safety ring, as well as different finishes and aesthetic configurations. This flexibility allows the closure to be adapted to different types of containers and presentation requirements.
The system is primarily optimized for low-viscosity liquids, such as aqueous solutions, extracts, or fluid cosmetic preparations, ensuring uniform and controlled dripping. For higher-density substances, such as vegetable oils or concentrated essences, specific versions with an enlarged dosing hole are available to facilitate flow.
Assembly is simple: the dropper insert is automatically inserted when the cap is screwed on, ensuring a precise fit and a tight seal. Its internal design replicates the geometry of the container's neck, guaranteeing compatibility and tightness in both DIN18 vials and 18 mm variants without a seal.
These closures constitute a practical, versatile, and reliable solution for applications requiring control in dispensing, content protection, and adaptability to different formulations and container formats.
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